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Properties, Preparation and Requirements to Testing of Ceramic Materials

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Nondestructive Characterization of Materials
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Summary

The strength of ceramic materials is mainly defined by the defect or flaw size in the bulk as well as on the surface of the component. Defects can have various origins like raw materials, processing, moulding, sintering, and finishing. For a break through of ceramics as engineering materials the minimization of flaw size and concentration is necessary as well as the improvement of non-destructive test procedures. The test methods should be able to detect bulk and surface flaws, even in complex component shapes, to detect density fluctuations, especially in green bodies, and stresses in the final compound. They should be adaptable to industrial production processes.

Zusammenfassung

Die Festigkeit keramischer Werkstoffe hängt entscheidend von der Größe der Fehler ab. Fehler resultieren aus dem Rohstoff, dem Verarbeitungs- und Formgebungsverfahren, dem Sinterverlauf und der Endbearbeitung. Zur breiten Anwendung keramischer Werkstoffe im Maschinenbau sind Fehler an der Oberfläche und im Innern von Bauteilen sicher zu detektieren. Außerdem sollten prozeßbedingte Dichteunterschiede (besonders in Grünkörpern) sowie Eigenspannungen (auch in komplexen Bauteilen) sicher nachgewiesen werden können. Die Prüfmethoden sollten an industrielle Fertigungsprozesse anpaßbar sein.

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© 1989 Springer-Verlag Berlin Heidelberg

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Schmidt, H. (1989). Properties, Preparation and Requirements to Testing of Ceramic Materials. In: Höller, P., Hauk, V., Dobmann, G., Ruud, C.O., Green, R.E. (eds) Nondestructive Characterization of Materials. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84003-6_3

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  • DOI: https://doi.org/10.1007/978-3-642-84003-6_3

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-84005-0

  • Online ISBN: 978-3-642-84003-6

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